"away"
Otherwise, you will give yourself away.
Thank you so much.
I assume that "give yourself away" is used here in the sense of "reveal yourself". This use of "give away" is idiomatic. We don't really think of "away" as having a separately identifiable meaning.
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I assume that "give yourself away" is used here in the sense of "reveal yourself". This use of "give away" is idiomatic. We don't really think of "away" as having a separately identifiable meaning. There would be an explanation of the word "away" somewhere in the origin or development of the idiom, but this is not normally present in the minds of modern speakers.